| 摘要 |
PROBLEM TO BE SOLVED: To provide a standard cell which does not result in an increase in a cell area, assures a wider variable range of current driving capability and realize optimization of characteristics, in comparison with the prior art. SOLUTION: When PN ratio (4Wp/2Wn) = 2, the number of PMOS transistors and NMOS transistors are set asymmetrically to 4:2 and the gate widths Wp of the PMOS transistors 3 to 6 and the gate widths Wn of the NMOS transistors 7, 8 are always set equally to keep the PN ratio (4Wp/2Wn) = 2 unchanged. COPYRIGHT: (C)2004,JPO
|
